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C. E. BRANDFASS.

TIMING APPARATUS. APPLICATION FILED IULYI5, 1918.

1,3 12,888. Patented Aug. 12,1919.

. HTTORN CHARLES E. BRANDFASS, F WHEELING, WEST VIRGINIA.

TIMING APPARATUS.

Application filed July 15, 1918.

To all whom it may concern:

. Be it known that I, CHARLES E. BRAND- rules, a citizen of the United States of America, and resident of Wheeling, county of Ohio, and State of West Virginia, have invented certain new and useful Improvements in Timing Apparatus, of which the following is a specification.

This invention relates broadly to electrical timing apparatus, and more particularly to a timer for the ignition systems employed in connection with internal combustion engines. I I

The primary object of the invention is to provide a rotary timing device or distributer for the ignition systems of explosion engines, in which the various binding posts are stationarily located in closely associated, or grouped, relation at one side of the casing Where they are readily accessible, enabling lead wires to be connected thereto without the necessity of extending such wires, or some of them, around, or partially around, the casing.

A further object is to provide a device of the character mentioned in which the inner peripheral insulation engaged by the rotating brush is composed of removable segments interposed between the segmental metallic contact pieces, rendering renewal of said insulation, or portions thereof, when Worn through contact with a rotating brush, a comparatively easy and simple task and a matter involving comparatively small ex: pense.

With these and other objects in view, the invention resides in the features ofconstruction, arrangement of parts and combinations of elements which will hereinafter be fully described, reference being had to the accompanying drawings, in which- Figure 1 is a view partially in front elevation and partially in section, illustrating the inventicin';

Fig. 2 is a section on line 22, Fig. 1;

gig. 3 is a section on line 44;, Fig. 1; an

Fig. 4 is a detail perspective view of one of the removable insulation. segments.

Referring to said drawings, in which like designating characters distinguish like parts throughout the several views- 1 indicates a metallic casing which has disposed interiorly thereof a close-fitting ring 2 of insulating material. Fitted snugly against the inner peripheral face of said Specification of Letters Patent.

Patented Aug. 12, 1919.

Serial No. 244,854.

ring 2 is a second ring 3 of insulating material which is preferably of relatively greater thickness than said ring 2 for a purpose which will hereinafter be explained. Rigidly supported on the inner face of said second msulating ring 3 at equi-distant points are.

metal contact terminals or blocks 4 corresponding in number with the number of spark-plugs to which the current is to be successively conducted, and interposed between said contact blocks are removable segments 5 of insulating material.

The adjacent ends of said contact blocks 4: and said insulation segments 5 are beveled, the former on their rear or outer faces and the latter on their inner faces, so that said segments are dove-tailed into place with their-said inner faces disposed flush with the correspondingjaces of said blocks. As is obvious, when said segments 5 become worn to the extent thatv renewal is required, it is only necessary to slip such segments from their seated positions in which they interlock with said contact blocks, and to insert substitute segments in their 'places' Manifestly, such simple substitution of inexpensive segments involves relatively eat economy since it is not necessary that other parts of the structure be disassembled or that special skill be employe The contact blocks 4 are rigidly held in I place by means of attaching screws or rivets 6 directed through the inner ring 3 of insulation. Each of said screws is connected by a lead wire 7 to one of the various bind-'; ing posts 8, all of which are rigidly mounted in a block 9 of insulating material located at one side of the casing 1, preferably that side nearest to the spark plugs, so that the conductor. wires (not shown) from said binding posts may traverse a. practically direct path in reaching the spark plugs. In other words, the positioning of said binding posts at the point mentioned permits the conductor wires which connect the spark plugs therewith to i be advantageously grouped in readily accessible position at one side of the casing.

The block 9 is carried by, or maybe formed integral with, the outer insulation ring 2, the same being protruded through a recessior opening 10 provided in the easing 1. The lead wires 7 have their outer end portions disposed within radial passages provided therefor in said block 9 and ring 2, and thence extend between the rings 2 and 3 to their respective contact blocks 4;, being attached at their inner ends to the screws 6' within separated grooves or channels 12 provided in the outer peripheral surface of the ring 3, as shown.

From the foregoing description it will be evident that the timing mechanism constituting the present invention not only provides a structure embodying conveniently renewable insulation segments interposed between the spaced contact blocks, but also a construction in which all of the various binding posts are readily accessible without dismantling any part of the mechanism.

\Vhat is claimed is 1. In an ignition timer, a casing, superimposed insulation rings mounted Within said casing, contact blocks disposed in spaced relation on the inner face of the inner of said rings, metallic means extending through said inner ring for maintaining said blocks in place, insulation segn'ients removably mounted between said blocks, and lead wires disposed between said rings, said wires having their inner ends connected to said blockattaching means and having their opposite ends directed outward through the casing and in aclosely associated group.

2. In an ignition timer, a casing, superimposed insulation rings mounted within said casing, cont-act blocks disposed in spaced relation on the inner face of the inner of said rings, attaching screws for said .blocks extending through said inner ring,

lead wires connected to said screws, said wires having their outer ends leading outward through one side of said casing in a Copies said casing, contact blocks disposed in spaced relation on the inner face of the inner of said rings, attaching screws for said blocks extending through said inner ring, and lead wires connected to said screws, said wires being disposed between'said insulation rings and having their outer ends leading outward through one side of said casing in a closely associated group, one of said rings having grooves in its outer face in which said Wires are individually carried.

4. In an ignition timer, a. casing, superimposed insulation rings mounted within said casing, contact blocks disposed in spaced relation on'the inner face of the inner of said rings, attaching screws for said blocks extending through said inner ring, a block of insulation associated with the outer of said rings and protruding through one side of said casing, bindmg posts grouped on said insulation block, and lead wires extending from said posts to the respective attaching screws for the contact blocks, said insulation block having passages in which the outer end portions of said wires are disposed, and one of said rings having grooves in its periphery within which the bodies of said wires are carried. In testimony whereof, I aflix my signature in presence of two subscribing witnesses. CHAS. E. BRANDF'ASS. Witnesses:

E. J. SGHMITZ, H J. HEYNEMAN.

of this patient may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 32. G. 

